Deprecate Net.Socket.IdleSocketTimeSaving

net/socket/client_socket_pool_base.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/socket/client_socket_pool_base.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/compiler_specific.h"
@@ skipping 1022 matching lines @@
   handle->set_connect_timing(connect_timing);
 
   if (reuse_type == ClientSocketHandle::REUSED_IDLE) {
     net_log.AddEvent(
         NetLogEventType::SOCKET_POOL_REUSED_AN_EXISTING_SOCKET,
         NetLog::IntCallback("idle_ms",
                             static_cast<int>(idle_time.InMilliseconds())));
 
     UMA_HISTOGRAM_COUNTS_1000("Net.Socket.IdleSocketReuseTime",
                               idle_time.InSeconds());
-    UMA_HISTOGRAM_TIMES(
-        "Net.Socket.IdleSocketTimeSaving",
-        connect_timing.connect_end - connect_timing.connect_start);
   }
 
   if (reuse_type != ClientSocketHandle::UNUSED) {
     // The socket being handed out is no longer considered idle, but was
     // considered idle until just before this method was called.
     UMA_HISTOGRAM_CUSTOM_COUNTS("Net.Socket.NumIdleSockets",
                                 idle_socket_count() + 1, 1, 256, 50);
   }
 
   net_log.AddEvent(
@@ skipping 328 matching lines @@
   // If there are no more requests, kill the backup timer.
   if (pending_requests_.empty())
     backup_job_timer_.Stop();
   request->CrashIfInvalid();
   return request;
 }
 
 }  // namespace internal
 
 }  // namespace net